3-port boost control solenoid. Solenoid works well with all Haltech systems in open or closed loop modes. Can be used with internal or external wastegate configurations. Solenoid ships with two 5/16" (8mm) barb fittings and one muffler/filter fitting. Solenoid has unterminated wire connection. Connection is non-polarity sensitive, can be connected directly to the PWM output of all Haltech ECUs.